- Mature height
- Naturally grows 2m to 4m (approx.) (Topiary height is maintained by pruning)
- Mature width
- 2.0m to 2.5m
Camellia japonica 'White Nun' is an evergreen shrub presented here as a clipped topiary ball. Large pure white semi-double flowers open from late winter into spring against deep green glossy leaves. The contrast between white flower and dark foliage is the whole point of the cultivar, and the clipped form keeps the display neat and contained.
Partial shade with morning sun gives the best result, since strong afternoon light marks white camellia petals. Soil should be free draining, slightly acidic and rich in organic matter. Growth is slow to moderate at about 20 to 40 centimetres a year. Light to moderate frost is tolerated once established, and cool to warm temperate districts suit it.
Use these balls where a formal note is wanted, flanking a doorway, repeated down a path, set into a courtyard bed or standing in a pot on a shaded terrace. They also work as full stops at either end of a hedge run. Plants shaped in advance let a landscape read as complete from the day of handover.
Frequently Asked Questions
About White Nun Camellia
What is Camellia japonica 'White Nun'?
It is a white flowering cultivar of the common camellia, grown here as a clipped topiary ball. The blooms are large, semi-double and pure white, opening in late winter and spring over glossy deep green foliage. The plant is evergreen, long lived and slow growing, which is exactly what makes it hold a clipped shape so well.
How big are the White Nun topiary balls?
The 50 centimetre size carries a head of roughly 50 to 60 centimetres across, and the 100 litre size around 70 to 90 centimetres. Both are held at that size with regular trimming. Unclipped and left alone the plant would slowly build to a natural shrub of 3 to 4 metres over many years.
When does White Nun Camellia flower?
Flowering runs from late winter into spring, generally July through October across southern Australia. Buds open progressively over about two months rather than all at once. White camellia petals bruise more visibly than coloured ones, so a position sheltered from driving rain and harsh sun keeps the flowers looking clean for longer.
Does it need sun or shade?
Partial shade with morning sun is best. Camellia japonica evolved as an understorey plant and its foliage burns in strong exposed sun, while white flowers in particular discolour quickly under afternoon heat. An eastern aspect, a shaded courtyard, or a position under high open canopy all give good results.
Does it have invasive roots?
No. Camellias produce a fibrous, relatively shallow root system with no aggressive spreading habit, so they are safe to plant near paving, walls, drainage and service lines. The trade off is that those surface roots dislike competition and dry out quickly, which is why mulch and consistent watering matter more than they would for a deeper rooted shrub.
Can it grow in pots?
Yes. A container 40 to 50 centimetres wide suits a single ball for an entry, courtyard or balcony. Use a free draining camellia or azalea potting mix and keep the drainage holes clear. Potted camellias dry out fast in summer and need watering two or three times a week during hot weather.
How do I care for and trim White Nun topiary?
Trim two or three times a year, taking only soft new growth, with the main shaping done as soon as flowering ends. Never cut back hard into old bare wood, since camellias are slow to reshoot from it. Feed with a camellia fertiliser after that prune, mulch the root zone, and water deeply through summer.